This new Xbox 360 emulator runs surprisingly well on Android, but you should hold off

X360 Mobile is a new Xbox 360 emulator for Android, and early testing shows encouraging results. But you should wait before downloading it.
Android Authority

Dolphin emulator update gives you GameCube achievements and a reset button for no-fuss fixes

Dolphin release 2512 brings RetroAchievements support to the stable Android channel, covering over 750 GameCube games. A new “Reset All Settings” button has also been added to the advanced menu, ...